| Waiting bid |
| Walpurgis diamond |
| Walsh system |
| Wang trumpasking bids |
| Warren |
| Weak jump overcall |
| Weak jump shift responses |
| Weak Notrump |
| Weak Notrump overcall |
| Weak opening systems |
| Weak suit |
| Weak suit game try |
| Weak takeout |
| Weak two-bids |
| Weakness response |
| Weakness-concealing plays |
| Weiss convention |
| Weissberger |
| West Coast Scientific |
| Western cuebids |
| Western Roth-Stone |
| Western Scientific |
| Wheel |
| Whisk |
| Whist |
| White |
| Wide open |
| Wolff sign-off |
| Wonder bids |
| Woodson two-way notrump |
| Work point-count |
| Working cards |
| Wriggle |
| Wrong side |
